import store from '@/store'
import config from '@/config'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { toast, showConfirm, tansParams } from '@/utils/common'
import CryptoJS from 'crypto-js'

let timeout = 10000
const baseUrl = config.baseUrl

// MD5 加密函数 - 32位小写
const md5 = (str) => {
  return CryptoJS.MD5(str).toString(CryptoJS.enc.Hex).toLowerCase()
}

const request = config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  config.headers = config.headers || {}
  if (getToken() && !isToken) {
    config.headers['PortalToken'] = getToken();
  }
  
  // 添加 timestamp 和 sign 参数
  const timestamp = Date.now()
  const signStr = `appid=xinghe&appsecret=xinghe123&timestamp=${timestamp}`
  const sign = md5(signStr)
  
  config.headers['timestamp'] = timestamp
  config.headers['sign'] = sign
  
  // get请求映射params参数
  if (config.params) {
    let url = config.url + '?' + tansParams(config.params)
    url = url.slice(0, -1)
    config.url = url

  }
  return new Promise((resolve, reject) => {
    uni.request({
      method: config.method || 'get',
      timeout: config.timeout || timeout,
      url: config.baseUrl || baseUrl + config.url,
      data: config.data,
      header: config.headers,
      dataType: 'json'
    }).then(response => {
      let [error, res] = response
      if (error) {
        console.log('res-err', error)
        toast(error)
        reject('后端接口连接异常')
        return
      }
      const code = res.statusCode || 200
      const msg = errorCode[code] || res.data.msg || errorCode['default']
      if (code === 401) {
        showConfirm('登录状态已过期，您可以继续留在该页面，或者重新登录?').then(res => {
          if (res.confirm) {
            store.dispatch('LogOut').then(res => {
              uni.reLaunch({ url: '/pages/login/index' })
            })
          }
        })
        // reject('无效的会话，或者会话已过期，请重新登录。')
      } else if (code === 500) {
        toast(msg)
        reject('500')
      } else if (code !== 200) {
        toast(msg)
        reject(code)
      }
      if (config.url.includes('attach')) {
        resolve(res)
      } else
        resolve(res.data)
    })
      .catch(error => {
        let { message } = error
        if (message === 'Network Error') {
          message = '后端接口连接异常'
        } else if (message.includes('timeout')) {
          message = '系统接口请求超时'
        } else if (message.includes('Request failed with status code')) {
          message = '系统接口' + message.substr(message.length - 3) + '异常'
        }
        toast(message)
        reject(error)
      })
  })
}

export default request
